How and why was the Hanford Nuclear site built

The Hanford Site is a nuclear depot established in the midst of World War II.

Explanation:

The nuclear station was formed in 1943. Hanford was established as part of the Manhattan Project by the U.S. government. Hanford was founded because of the dangers that threatened the United States. The plutonium produced at that station was used in an atomic bomb dropped on Hiroshima. As the United States' threat grew during the Cold War, the Hanford complex expanded its capacity. The facilities were eventually disbanded, and in 2015, Hanford was declared part of a national park belonging to a historical period related to the Manhattan Project.

the answer is b. 300t + 3/2xt

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: